Loading Textures

//check if the file exists
if(System.IO.File.Exists(_Name + ".png"))
{
    //make a bitmap out of the file on the disk
    Bitmap TextureBitmap = new Bitmap(_Name + ".png");
    //get the data out of the bitmap
    System.Drawing.Imaging.BitmapData TextureData = 
	TextureBitmap.LockBits(
            new System.Drawing.Rectangle(0,0,TextureBitmap.Width,TextureBitmap.Height),
            System.Drawing.Imaging.ImageLockMode.ReadOnly,
            System.Drawing.Imaging.PixelFormat.Format24bppRgb
        );
 
    //Code to get the data to the OpenGL Driver
 
    //generate one texture and put its ID number into the "Texture" variable
    GL.GenTextures(1,out Texture);
    //tell OpenGL that this is a 2D texture
    GL.BindTexture(TextureTarget.Texture2D,Texture);
 
    //the following code sets certian parameters for the texture
    GL.TexEnv(TextureEnvTarget.TextureEnv,
	TextureEnvParameter.TextureEnvMode,
	(float)TextureEnvMode.Modulate);
    GL.TexParameter(TextureTarget.Texture2D,
	TextureParameterName.TextureMinFilter,
	(float)TextureMinFilter.LinearMipmapLinear);
    GL.TexParameter(TextureTarget.Texture2D,
	TextureParameterName.TextureMagFilter,
	(float)TextureMagFilter.Linear);
 
    //load the data by telling OpenGL to build mipmaps out of the bitmap data
    Glu.Build2DMipmap(TextureTarget.Texture2D,
        (int)PixelInternalFormat.Three, TextureBitmap.Width, TextureBitmap.Height,
	PixelFormat.Bgr, PixelType.UnsignedByte,
	TextureData.Scan0
    );
 
    //free the bitmap data (we dont need it anymore because it has been passed to the OpenGL driver
    TextureBitmap.UnlockBits(TextureData);
 
}
[/blockcode]
Thats basically it. It's quite simple considering that not everything in the above code is essential to loading a texture.